561560315 has 4 divisors (see below), whose sum is σ = 673872384. Its totient is φ = 449248248.

The previous prime is 561560227. The next prime is 561560323. The reversal of 561560315 is 513065165.

561560315 = 4312² + 4313² + ... + 4341².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 513065165 = 5 ⋅102613033.

It is a cyclic number.

It is not a de Polignac number, because 561560315 - 2²² = 557366011 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56156027 + ... + 56156036.

It is an arithmetic number, because the mean of its divisors is an integer number (168468096).

Almost surely, 2^561560315 is an apocalyptic number.

561560315 is a deficient number, since it is larger than the sum of its proper divisors (112312069).

561560315 is a wasteful number, since it uses less digits than its factorization.

561560315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112312068.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 561560315 is about 23697.2638715950. The cubic root of 561560315 is about 825.0218861656.

The spelling of 561560315 in words is "five hundred sixty-one million, five hundred sixty thousand, three hundred fifteen".